both atg and tomcat apps failed in mustang b41 with the same problem, the apps failed after running about 48 hours.

the machine running atg: jtg-blade2
uname -a
SunOS jtg-blade2 5.9 Generic_117171-07 sun4u sparc SUNW,Sun-Blade-1000
cat /etc/release
      Solaris 9 9/04 s9s_u7wos_09 SPARC

the machine running tomcat: jtg-sunfire-4
uname -a
SunOS jtg-sunfire-4 5.10 Generic_Patch i86pc i386 i86pc
cat /etc/release
     Solaris 10 7/05 s10x_u1wos_06 X86

atg related information:
-----------------------
hostname: jtg-blade2

bash-2.05# /usr/j2se/bin/java -server -version
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b41)
Java HotSpot(TM) Server VM (build 1.6.0-ea-b41, mixed mode)

flag used:
java -server -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled

log and core file location:
/bt/atgrun.11652.-server

hs error file has been attached.

stack trace:
(dbx) where t@4
current thread: t@4
=>[1] __lwp_kill(0x0, 0x6, 0x0, 0xff33c000, 0x6c08, 0x6c00), at 0xff31f684
  [2] raise(0x6, 0x0, 0xfad7efd8, 0xfeee6000, 0x5938, 0x5800), at 0xff2d0884
  [3] abort(0x1, 0x0, 0xfef166b8, 0xfeee6000, 0x5b84, 0x5800), at 0xff2b6cd0
  [4] os::abort(0x1, 0xfeea509a, 0x1ac, 0x2, 0x0, 0x1), at 0xfedaf20c
  [5] VMError::report_and_die(0x1, 0x6c00, 0x1, 0x4800, 0xfeebfeaf, 0x0), at 0xf
ee322a0
  [6] JVM_handle_solaris_signal(0xb, 0xfad7f6d0, 0xfad7f418, 0x3800, 0xccc70, 0x
1), at 0xfea1e1f8
  [7] __sighndlr(0xb, 0xfad7f6d0, 0xfad7f418, 0xfea1d808, 0x0, 0x0), at 0xff385b
0c
  [8] call_user_handler(0xb, 0xfad7f6d0, 0xfad7f418, 0x0, 0x0, 0x0), at 0xff37f8
04
  [9] sigacthandler(0xb, 0xfad7f6d0, 0xfad7f418, 0xbc7a0, 0xbc840, 0xfe5d0000),
at 0xff37f9b4
  ---- called from signal handler with signal 11 (SIGSEGV) ------
  [10] MarkFromRootsClosure::scanOopsInOop(0xfad7fa18, 0xef93ffb0, 0x776c, 0x740
0, 0xfad7f7b8, 0xffffffff), at 0xfebbeabc
  [11] BitMap::iterate(0xbc7e4, 0xfad7fa18, 0xa4ffec, 0x2e00000, 0x527ff, 0x2e00
000), at 0xfeb746f4
  [12] CMSCollector::markFromRootsWork(0xbc6d8, 0xbc7f0, 0xbc7a0, 0xcd114, 0xccd
28, 0xccd20), at 0xfebb87e4
  [13] CMSCollector::markFromRoots(0xbc6d8, 0x1, 0xbc6d8, 0xfef4e0b4, 0xfffffda0
, 0x0), at 0xfebb85a4
  [14] CMSCollector::collect_in_background(0xbc6d8, 0x1, 0x75128, 0xbc9e0, 0x1,
0xbc990), at 0xfebb5a1c
  [15] ConcurrentMarkSweepThread::run(0x0, 0x7d0, 0xccc70, 0x1, 0xfef333b8, 0xfe
ee6000), at 0xfebc32a4
  [16] _start(0xccc70, 0x4800, 0x3800, 0x3898, 0xfeee6000, 0xcd658), at 0xfedaec
38

###@###.### 2005-06-20 19:39:41 GMT